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Improve name & UUID uniqueness checking in QEMU driver

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This commit is contained in:
Daniel P. Berrange 2009-05-08 10:11:14 +00:00
parent 88e22e4e8c
commit 54ebbde1e1
2 changed files with 89 additions and 20 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Fri May 8 11:10:22 BST 2009 Daniel P. Berrange <berrange@redhat.com>
* src/qemu_driver.c: Make name & UUID uniqueness checking in
define, create & restore functions more robust. Throw error
in destory operation, if guest isn't running
Fri May 8 11:07:22 BST 2009 Daniel P. Berrange <berrange@redhat.com>
* src/qemu_conf.c: Enable migrate/save/restore for QEMU

97
src/qemu_driver.c
View File

@ -2147,24 +2147,39 @@ static virDomainPtr qemudDomainCreate(virConnectPtr conn, const char *xml,
if (virSecurityDriverVerify(conn, def) < 0)
goto cleanup;
vm = virDomainFindByName(&driver->domains, def->name);
if (vm) {
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined"),
def->name);
goto cleanup;
}
/* See if a VM with matching UUID already exists */
vm = virDomainFindByUUID(&driver->domains, def->uuid);
if (vm) {
/* UUID matches, but if names don't match, refuse it */
if (STRNEQ(vm->def->name, def->name)) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(def->uuid, uuidstr);
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain with uuid '%s' is already defined"),
uuidstr);
_("domain '%s' is already defined with uuid %s"),
vm->def->name, uuidstr);
goto cleanup;
}
/* UUID & name match, but if VM is already active, refuse it */
if (virDomainIsActive(vm)) {
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain is already active as '%s'"), vm->def->name);
goto cleanup;
}
virDomainObjUnlock(vm);
} else {
/* UUID does not match, but if a name matches, refuse it */
vm = virDomainFindByName(&driver->domains, def->name);
if (vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
def->name, uuidstr);
goto cleanup;
}
}
if (!(vm = virDomainAssignDef(conn,
&driver->domains,
def)))
@ -2350,6 +2365,11 @@ static int qemudDomainDestroy(virDomainPtr dom) {
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (!virDomainIsActive(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_OPERATION_FAILED,
"%s", _("domain is not running"));
goto cleanup;
}
qemudShutdownVMDaemon(dom->conn, driver, vm);
event = virDomainEventNewFromObj(vm,
@ -3270,17 +3290,36 @@ static int qemudDomainRestore(virConnectPtr conn,
goto cleanup;
}
/* Ensure the name and UUID don't already exist in an active VM */
/* See if a VM with matching UUID already exists */
vm = virDomainFindByUUID(&driver->domains, def->uuid);
if (!vm)
vm = virDomainFindByName(&driver->domains, def->name);
if (vm) {
/* UUID matches, but if names don't match, refuse it */
if (STRNEQ(vm->def->name, def->name)) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
vm->def->name, uuidstr);
goto cleanup;
}
/* UUID & name match, but if VM is already active, refuse it */
if (virDomainIsActive(vm)) {
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_INVALID,
_("domain is already active as '%s'"), vm->def->name);
goto cleanup;
} else {
}
virDomainObjUnlock(vm);
} else {
/* UUID does not match, but if a name matches, refuse it */
vm = virDomainFindByName(&driver->domains, def->name);
if (vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
def->name, uuidstr);
goto cleanup;
}
}
@ -3470,18 +3509,41 @@ static virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) {
if (virSecurityDriverVerify(conn, def) < 0)
goto cleanup;
vm = virDomainFindByName(&driver->domains, def->name);
/* See if a VM with matching UUID already exists */
vm = virDomainFindByUUID(&driver->domains, def->uuid);
if (vm) {
/* UUID matches, but if names don't match, refuse it */
if (STRNEQ(vm->def->name, def->name)) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
vm->def->name, uuidstr);
goto cleanup;
}
/* UUID & name match */
virDomainObjUnlock(vm);
newVM = 0;
} else {
/* UUID does not match, but if a name matches, refuse it */
vm = virDomainFindByName(&driver->domains, def->name);
if (vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, uuidstr);
qemudReportError(conn, NULL, NULL, VIR_ERR_OPERATION_FAILED,
_("domain '%s' is already defined with uuid %s"),
def->name, uuidstr);
goto cleanup;
}
}
if (!(vm = virDomainAssignDef(conn,
&driver->domains,
def))) {
virDomainDefFree(def);
goto cleanup;
}
def = NULL;
vm->persistent = 1;
if (virDomainSaveConfig(conn,
@ -3503,6 +3565,7 @@ static virDomainPtr qemudDomainDefine(virConnectPtr conn, const char *xml) {
if (dom) dom->id = vm->def->id;
cleanup:
virDomainDefFree(def);
if (vm)
virDomainObjUnlock(vm);
if (event)